Posted over in external ballistics but thought it could fit here too. Mods if this is a no-no, let me know.
So, as lots of us have been discussing/listening to wind talk here, specifically about the BC method for wind, I have been giving some thought specifically to .22LR wind.
And….I think we have a mil based system that is equally as fast, but for .22LR!
So, it’s super similar to the BC method. We’re using wind speed and range to determine our holds.
We basically assign the gun a “1mph wind bracket”, and call it a 1mph gun. For distance, we’re going more granular than 100,200, etc. We’re going 80,90,100,110, etc. Wind gets a decimal after the first number, and range after the second number.
Wind: 0.7 for 7mph, 1.2 for 12 mph, and 1.0 for 10mph, just to give examples
Distance: 0.75 for 75 yards, 1.00 for 100 yards, 1.50 for 150 yards, again, examples. 200 is 2.00, 350 is 3.50.
Essentially, you take your two numbers, multiply them, and you get your wind hold. Blam.
Examples:
10 mph at 100 yards, 1 mil hold. 1.00 x 1.0 = 1
15mph at 100 yards, 1.5 mil hold. 1.00 x 1.5 = 1.5
5 mph at 150 yards, .75 mil hold. 1.50 x 0.5 = 0.75
10 mph at 200 yards, 2 mil hold. 2.00 x 1.0 = 2.0
Drop chart to back it up. 10mph full value. Close enough for government work, or precision rifle shooters. Whatever you're into.
Drop Chart
I saw this trend when running a 10mph wind out to 300 yards in AB. It’s pretty dead on, +- 0.1 mil. Running 1060 fps at 4,000ft DA for my example. Confirmed taking out to 400 last weekend. Makes life a hell of a lot easier.
So, debate away, I’m sure I’ll get flamed a bit for this, but wanted to show you all.
So, as lots of us have been discussing/listening to wind talk here, specifically about the BC method for wind, I have been giving some thought specifically to .22LR wind.
And….I think we have a mil based system that is equally as fast, but for .22LR!
So, it’s super similar to the BC method. We’re using wind speed and range to determine our holds.
We basically assign the gun a “1mph wind bracket”, and call it a 1mph gun. For distance, we’re going more granular than 100,200, etc. We’re going 80,90,100,110, etc. Wind gets a decimal after the first number, and range after the second number.
Wind: 0.7 for 7mph, 1.2 for 12 mph, and 1.0 for 10mph, just to give examples
Distance: 0.75 for 75 yards, 1.00 for 100 yards, 1.50 for 150 yards, again, examples. 200 is 2.00, 350 is 3.50.
Essentially, you take your two numbers, multiply them, and you get your wind hold. Blam.
Examples:
10 mph at 100 yards, 1 mil hold. 1.00 x 1.0 = 1
15mph at 100 yards, 1.5 mil hold. 1.00 x 1.5 = 1.5
5 mph at 150 yards, .75 mil hold. 1.50 x 0.5 = 0.75
10 mph at 200 yards, 2 mil hold. 2.00 x 1.0 = 2.0
Drop chart to back it up. 10mph full value. Close enough for government work, or precision rifle shooters. Whatever you're into.
Drop Chart
I saw this trend when running a 10mph wind out to 300 yards in AB. It’s pretty dead on, +- 0.1 mil. Running 1060 fps at 4,000ft DA for my example. Confirmed taking out to 400 last weekend. Makes life a hell of a lot easier.
So, debate away, I’m sure I’ll get flamed a bit for this, but wanted to show you all.
